/***************************************************************************/
/*                                                                         */
/*  ftcimage.c                                                             */
/*                                                                         */
/*    FreeType Image cache (body).                                         */
/*                                                                         */
/*  Copyright 2000-2001, 2003, 2004, 2006 by                               */
/*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
/*                                                                         */
/*  This file is part of the FreeType project, and may only be used,       */
/*  modified, and distributed under the terms of the FreeType project      */
/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
/*  this file you indicate that you have read the license and              */
/*  understand and accept it fully.                                        */
/*                                                                         */
/***************************************************************************/


#include <ft2build.h>
#include FT_CACHE_H
#include "ftcimage.h"
#include FT_INTERNAL_MEMORY_H

#include "ftccback.h"
#include "ftcerror.h"


/* finalize a given glyph image node */
FT_LOCAL_DEF(void)
ftc_inode_free(FTC_Node ftcinode,
               FTC_Cache cache)
{
    FTC_INode inode = (FTC_INode)ftcinode;
    FT_Memory memory = cache->memory;


    if (inode->glyph)
    {
        FT_Done_Glyph(inode->glyph);
        inode->glyph = NULL;
    }

    FTC_GNode_Done(FTC_GNODE(inode), cache);
    FT_FREE(inode);
}


FT_LOCAL_DEF(void)
FTC_INode_Free(FTC_INode inode,
               FTC_Cache cache)
{
    ftc_inode_free(FTC_NODE(inode), cache);
}


/* initialize a new glyph image node */
FT_LOCAL_DEF(FT_Error)
FTC_INode_New(FTC_INode * pinode,
              FTC_GQuery gquery,
              FTC_Cache cache)
{
    FT_Memory memory = cache->memory;
    FT_Error error;
    FTC_INode inode;


    if (!FT_NEW(inode))
    {
        FTC_GNode gnode = FTC_GNODE(inode);
        FTC_Family family = gquery->family;
        FT_UInt gindex = gquery->gindex;
        FTC_IFamilyClass clazz = FTC_CACHE__IFAMILY_CLASS(cache);


        /* initialize its inner fields */
        FTC_GNode_Init(gnode, gindex, family);

        /* we will now load the glyph image */
        error = clazz->family_load_glyph(family, gindex, cache,
                                         &inode->glyph);
        if (error)
        {
            FTC_INode_Free(inode, cache);
            inode = NULL;
        }
    }

    *pinode = inode;
    return error;
}


FT_LOCAL_DEF(FT_Error)
ftc_inode_new(FTC_Node * ftcpinode,
              FT_Pointer ftcgquery,
              FTC_Cache cache)
{
    FTC_INode* pinode = (FTC_INode*)ftcpinode;
    FTC_GQuery gquery = (FTC_GQuery)ftcgquery;


    return FTC_INode_New(pinode, gquery, cache);
}


FT_LOCAL_DEF(FT_Offset)
ftc_inode_weight(FTC_Node ftcinode,
                 FTC_Cache ftccache)
{
    FTC_INode inode = (FTC_INode)ftcinode;
    FT_Offset size = 0;
    FT_Glyph glyph = inode->glyph;

    FT_UNUSED(ftccache);


    switch (glyph->format)
    {
        case FT_GLYPH_FORMAT_BITMAP:
        {
            FT_BitmapGlyph bitg;


            bitg = (FT_BitmapGlyph)glyph;
            size = bitg->bitmap.rows * ft_labs(bitg->bitmap.pitch) +
                   sizeof(*bitg);
        }
        break;

        case FT_GLYPH_FORMAT_OUTLINE:
        {
            FT_OutlineGlyph outg;


            outg = (FT_OutlineGlyph)glyph;
            size = outg->outline.n_points *
                   (sizeof(FT_Vector) + sizeof(FT_Byte)) +
                   outg->outline.n_contours * sizeof(FT_Short) +
                   sizeof(*outg);
        }
        break;

        default:
            ;
    }

    size += sizeof(*inode);
    return size;
}


#if 0

FT_LOCAL_DEF(FT_Offset)
FTC_INode_Weight(FTC_INode inode)
{
    return ftc_inode_weight(FTC_NODE(inode), NULL);
}

#endif /* 0 */


/* END */